Calvin Middleton, a 16-year-old who lived in Cheshire in the U.K., was found unconscious after he had gone to the bathroom at the end of a church service on Sunday, February 13.

He had been complaining of a migraine and said he had felt sick shortly beforehand, and his dad had gone to look for him when he did not return from the bathroom.

An ambulance was called and he was transported to the nearby Salford Royal Hospital in Greater Manchester. He died there just a few hours later in the early hours of the morning of February 14.

Doctors found that what Middleton had thought was a migraine was the result of a bleed in his brain.

Brain bleeds can cause brain damage and be life-threatening. Some of their symptoms include headache, nausea, sudden tingling, weakness, numbness or paralysis of the face, arm or leg, as well as many others, according to the Cleveland Clinic.

The seriousness and outcome depend on the cause of the bleed as well as its size, location within the skull, and the age and overall health of the patient. There are several causes including high blood pressure, a blood clot, weak blood vessels and head trauma.

Speaking to local newspaper the Manchester Evening News, Middleton’s family said the boy was just months away from taking his high school exams and was looking towards studying math and computer science.

“One minute my son was there, and the next he had just gone,” Middleton’s father, Andrew, told the paper. “The nurses did everything they could, but it was just not meant to be. It was his time to go.”

Doctors could not operate on Middleton since his blood pressure had dropped too low and a procedure could prove dangerous.

Middleton’s father described his son as “a bright and considerate human being.”

The family have since set up a fundraising page in Middleton’s memory and say they want the money to go towards a local church in order to support its work with schools and hospitals in Zimbabwe. The page is titled: “Weʼre raising £500 to Remember the life of Calvin Middleton with a donation to the church where he was worshipping when he collapsed.”

The fundraising page on the JustGiving platform initially had a target goal of £500 ($680), but donations have exceeded the family’s expectations. As of Monday morning, over £12,680 ($17,280) had been raised.

The father wrote in an update that he was “astounded by the kindness and generosity of so many.” Several Facebook users have left messages of support.

Update, 2/18/22, 11:35 a.m. ET: This article has been updated to include the name of the fundraising campaign.

Update, 2/21/22, 4:49 a.m. ET: This article has been updated with a new picture and total amount raised in donations.